/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cn.otrue.patienthealthmanager.activity;

import android.media.AudioManager;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceScreen;
import android.provider.Settings;
import cn.otrue.patienthealthmanager.R;

/**
 * Settings for the Alarm Clock.
 */
public class SettingsActivity extends PreferenceActivity implements
		Preference.OnPreferenceChangeListener {

	private static final int ALARM_STREAM_TYPE_BIT = 1 << AudioManager.STREAM_ALARM;

	private static final String KEY_ALARM_IN_SILENT_MODE = "alarm_in_silent_mode";
	public static final String KEY_ALARM_SNOOZE = "snooze_duration";
	public static final String KEY_VOLUME_BEHAVIOR = "volume_button_setting";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		addPreferencesFromResource(R.xml.settings);
	}

	@Override
	protected void onResume() {
		super.onResume();
		refresh();
	}

	@Override
	public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
			Preference preference) {
		if (KEY_ALARM_IN_SILENT_MODE.equals(preference.getKey())) {
			CheckBoxPreference pref = (CheckBoxPreference) preference;
			int ringerModeStreamTypes = Settings.System.getInt(
					getContentResolver(),
					Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);

			if (pref.isChecked()) {
				ringerModeStreamTypes &= ~ALARM_STREAM_TYPE_BIT;
			} else {
				ringerModeStreamTypes |= ALARM_STREAM_TYPE_BIT;
			}

			Settings.System.putInt(getContentResolver(),
					Settings.System.MODE_RINGER_STREAMS_AFFECTED,
					ringerModeStreamTypes);

			return true;
		}

		return super.onPreferenceTreeClick(preferenceScreen, preference);
	}

	public boolean onPreferenceChange(Preference pref, Object newValue) {
		final ListPreference listPref = (ListPreference) pref;
		final int idx = listPref.findIndexOfValue((String) newValue);
		listPref.setSummary(listPref.getEntries()[idx]);
		return true;
	}

	private void refresh() {
		final CheckBoxPreference alarmInSilentModePref = (CheckBoxPreference) findPreference(KEY_ALARM_IN_SILENT_MODE);
		final int silentModeStreams = Settings.System.getInt(
				getContentResolver(),
				Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
		alarmInSilentModePref
				.setChecked((silentModeStreams & ALARM_STREAM_TYPE_BIT) == 0);

		final ListPreference snooze = (ListPreference) findPreference(KEY_ALARM_SNOOZE);
		snooze.setSummary(snooze.getEntry());
		snooze.setOnPreferenceChangeListener(this);
	}

}
